25% of the people have a 4th cone and see colors as they are
You see less than 20 color nuances: you are a dichromats, like dogs, which means you have 2 types of cones only. You are likely to wear black, beige, and blue. 25% of the population is dichromat. You see between 20 and 32 color nuances: you are a trichromat, you have 3 types of cones…



















